Sand erosion and crack propagation mechanism of Cr/CrN/Cr/CrAlN multilayer coating

Wang, Di; Lin, Shisheng; Tian, Tian; Liu, Mingxia; Gengrong, Chang; Dong, Dan; Shi, Jing; Dai, Mingjiang; Jiang, Bailing; Zhou, Kesong

doi:10.1016/j.ceramint.2022.05.109

Cited by 16 publications

(1 citation statement)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As part of the surface engineering exploitations in past decades, super hardness coatings with nanocomposite, super-lattice, multilayered, or multi-component constituent structures have been designed and prepared [12][13][14][15][16]. Among them, nanocomposite TiAlSiN coating has attracted increasing attention because of its high hardness, strong fracture toughness, good thermal stability, and first-class abrasion resistance in severe environments [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Erosion Performance of TiAlSiN Coatings Prepared by High-Power Pulsed Magnetron Sputtering

Tang

et al. 2023

Metals

View full text Add to dashboard Cite

Erosion seriously threatens the safety of high-speed rotating mechanical components in very harsh service environments, particularly for lightweight titanium alloy matrix material. In order to improve the erosion resistance of titanium alloy, TiAlSiN coatings with different phase compositions are deposited on TC6 titanium alloy using a high-power pulse magnetron sputtering discharge (HPPMS) system under various discharge voltages. The componential and microstructural evolution as well as mechanical properties of the TiAlSiN coatings are evaluated by X-ray diffraction, scanning electron microscopy, and nanoindentation, respectively. The erosion performance relative to titanium alloy is investigated by a sand blasting tester. With the increase in discharge voltage from −500 to −600 V, the peak of discharge current increases from 105 to 225 A. The prepared TiAlSiN coatings show a shift of the preferred crystallographic orientation from (220) to (200), but all of them have a dense nanocomposite structure. Their hardness (H) and elastic modulus (E) gradually increase before decreasing, arriving at maximum values of 35.34 and 360.5 GPa at −570 V. The erosion resistance of the TiAlSiN coatings dependent on the discharge voltage is consistent with the H/E ratio change. The TiAlSiN coatings prepared at −560 V exhibit the optimal erosion resistance, which is 15 times that of the TC6 substrate. The erosion behavior of the coatings is positively correlated with their hardness and toughness. Adjusting the discharge voltage of the HPPMS pulse is finally proved to be an effective way of tailoring the coating phase compositions to improve the erosion resistance of titanium alloy.

show abstract